Phenobarbital (noun)

1. A medication that is used as a sedative and anti-seizure medication.
2. A barbiturate drug used to treat seizures and insomnia.

Origin:

The word "phenobarbital" is a combination of the words "phenylethylamine" and "barbiturate" which was first used in the early 20th century.

Examples:

1. Phenobarbital is used to control seizures in patients with epilepsy.
2. The patient was prescribed phenobarbital to help with his insomnia.
3. Phenobarbital is a sedative that can be habit-forming.
4. The phenobarbital dosage was adjusted to achieve the desired effect.
5. Phenobarbital is a long-acting barbiturate that is used to treat seizures.